The Playstation 3 version of Eufloria adds "ancient artifacts" to some asteroids, which you must zoom in to find.
Are these artifacts on fixed asteroids in fixed levels, or are they randomly distributed?
If their level is fixed, what missions can they be found in, and if not randomly placed, on which asteroids? (To avoid further spoilers, I'd recommend identifying the levels by number rather than name, e.g. I believe I found the first artifact in 1-3.)